There are several independent rating agencies that rate the financial strength of insurance companies, including AM Best, Moody's and Standard & Poor's, among others.
These rating services review the financial statements of insurance carriers and develop a financial strength rating based on the insurer's ability to pay their claims and meet their financial obligations.
The higher the financial rating of an insurance carrier, the more financially sound the insurer.
Here is a list of the best life insurance companies and their financial strength ratings.